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SAE-AISI A2 Steel vs. EN 1.4988 Stainless Steel

Both SAE-AISI A2 steel and EN 1.4988 stainless steel are iron alloys. They have 73% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A2 steel and the bottom bar is EN 1.4988 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 74
77
Tensile Strength: Ultimate (UTS), MPa 710 to 2040
640

Thermal Properties

Latent Heat of Fusion, J/g 260
290
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 38
15
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 9.5
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 5.5
23
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.7
6.0
Embodied Energy, MJ/kg 38
89
Embodied Water, L/kg 73
150

Common Calculations

PREN (Pitting Resistance) 8.9
22
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 25 to 73
23
Strength to Weight: Bending, points 23 to 46
21
Thermal Diffusivity, mm2/s 10
4.0
Thermal Shock Resistance, points 25 to 71
14

Alloy Composition

Carbon (C), % 1.0 to 1.1
0.040 to 0.1
Chromium (Cr), % 4.8 to 5.5
15.5 to 17.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 89.4 to 93.3
62.1 to 69.5
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 0.9 to 1.4
1.1 to 1.5
Nickel (Ni), % 0 to 0.3
12.5 to 14.5
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0
0.060 to 0.14
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.5
0.3 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0.15 to 0.5
0.6 to 0.85